Homemade power rack drawing

This drawing of the rack neglects most dimensions because they are governed by variable factors such as available ceiling height and the span of the lifting bar. The desire for a large working footprint area on the mat is traded off against the bar return re-seating tolerance. I have a 1-1/2 inch allowance now which is a bit tight. Two or three inches would be better. On the other hand, having it tight forces me to be more deliberate with my lifts.